W-20 W-20a W-20b W-B75 W-B75b Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Price $360.00$360.00 $380.00$380.00 $380.00$380.00 $539.99$539.99 $380.00$380.00 Applicable Materials Aluminum alloy Aluminum alloy Aluminum alloy Brass in hard or half hard state super-hard aluminum alloy Brass in hard or half hard state super-hard aluminum alloy Hardness Range 25~110 HRE 58~131 HV 25~110 HRE 58~131 HV 25~110 HRE 58~131 HV 63~105 HRF 63~105 HRF Specimen Size/mm Thickness 0.4-6 / Inner diameter>10 Thickness 0.4-13 / Inner diameter>10 Thickness 0.4-8 / Inner diameter>6 Thickness 0.4-6 / Inner diameter>10 Thickness 0.4-8 / Inner diameter>6 W-BB75 W-BB75b W-B92 Add to Cart Add to Cart Add to Cart Price $380.00$380.00 $380.00$380.00 $360.00$360.00 Applicable Materials Soft brass, pure copper Soft brass, pure copper Cold-rolled steel sheet, stainless steel Hardness Range 18~100 HRE 18~100 HRE 50~92 HRB Specimen Size/mm Thickness 0.4-6 / Inner diameter>10 Thickness 0.4-8 / Inner diameter>6 Thickness 0.4-6 / Inner diameter>10 Test Block Verification The hardness tester tests the standardized hardness block. For W-20, W- 20a, and W-20b Webster hardness testers, the dial indicator should point at the specified hardness values with a tolerance of ±0.5HW; for W-B75, W-B75b and W-B92, the indicator should point at 5HW±0.5HW; and for TW-BB75 and W-BB75b, the indicator should point at 17HW ±0.5HW.Operators should regularly check the instrument's accuracy by the standard hardness block. Calibration should be made if any deviation occurs. When testing the hardness block, use only its upper surface. Standard Package 1 Tester1 standard hardness block (attached with measurement and inspection report)1 spare indenter1 wrench1 small screwdriver1 instruction manual and 1 carrying case Test Block Verification The hardness tester tests the standardized hardness block. For W-20, W- 20a, and W-20b Webster hardness testers, the dial indicator should point at the specified hardness values with a tolerance of ±0.5HW; for W-B75, W-B75b and W-B92, the indicator should point at 5HW±0.5HW; and for TW-BB75 and W-BB75b, the indicator should point at 17HW ±0.5HW.Operators should regularly check the instrument's accuracy by the standard hardness block. Calibration should be made if any deviation occurs. When testing the hardness block, use only its upper surface. Standard Package 1 Tester1 standard hardness block (attached with measurement and inspection report)1 spare indenter1 wrench1 small screwdriver1 instruction manual and 1 carrying case